Maternity leave, a period of approved absence for incapacitation related to pregnancy and confinement, is chargeable to sick leave or any combination of sick leave, annual leave, and leave without pay, in the order given.

(a) Employees are required to request maternity leave substantially in advance of their intended absence so that staffing adjustments may be made.

(b) Periods of maternity leave shall be based on individual medical determination. A medical certification must be submitted showing expected date of confinement. Maternity leave may be granted for a period of 6 weeks prior and 6 weeks subsequent to birth.